to;  for;  in order to;  for;  as for;  regarding
 key;  lock;  key (to a problem);  clue
 indicates sentence subject (occasionally object);  indicates possessive (esp. in literary expressions);  but;  however;  regardless of;  whether (or not)
 to take (a resource, e.g. time or money);  to hang;  to come into view;  to arrive;  to come under (a contract, a tax);  to start (engines, motors);  to attend
 and;  and then;  thus;  and now;  and finally
 door (Western-style, car, etc.)
 too;  also;  both A and B;  A as well as B;  even;  as much as
 to open out (of a view, scenery, etc.);  to spread out;  to improve (of luck, prospects, etc.);  to get better;  to develop (of a town, civilization, etc.);  to become civilized;  to be sensible
 thing;  matter;  incident;  occurrence;  circumstances;  situation;  work
 indicates sentence topic;  indicates contrast with another option (stated or unstated);  adds emphasis
 to be able (in a position) to do;  to be up to the task;  to be ready;  to be completed;  to be made;  to be built;  to be good at
 because;  the reason is;  if you want to know why
 here;  this place;  this point;  here;  these past ... (e.g. three years);  these last ...
 at (place, time);  in;  to (direction, state);  toward;  for (purpose);  because of (reason);  for
 existing (at the present moment);  alright;  acceptable;  to be (usu. of inanimate objects);  to have
 that;  it;  then;  that point (in time); (arch.)  there; (arch.)  you
 if;  when;  and;  with;  used for quoting (thoughts, speech, etc.);  promoted pawn;  indicates a question
 by means of;  due to;  because of;  according to
 fixing (in place);  being fixed (in place);  fixing (e.g. salary, capital);  keeping the same;  fixation (histology);  user name (on an online forum like 2ch where the majority of users post anonymously)
 from (e.g. time, place, numerical quantity);  since;  from (originator);  by;  because;  since;  out of (constituent, part)
 small;  little;  slight;  below average (in degree, amount, etc.);  low (e.g. sound);  soft (e.g. voice)
 to pass through;  to pass by;  to pass (of time);  to elapse;  to have expired;  to have ended;  to exceed
 to go by;  to go past;  to run (between; of a rail service, bus route, etc.);  to operate (between);  to go indoors;  to go into a room;  to penetrate
 and;  besides;  because;  since;  the thing is;  for one thing
 invasion;  incursion;  raid;  aggression;  intrusion;  trespass
 course;  route;  path;  process;  means
 as (i.e. in the role of);  for (i.e. from the viewpoint of);  apart from... (used to change the topic);  even (e.g. "not even a single person");  thinking that...;  trying to...
 to use (a thing, method, etc.);  to make use of;  to use (a person, animal, puppet, etc.);  to employ;  to use (time, money, etc.);  to spend
 thing;  object;  one's things;  possessions;  things;  something;  quality
 all;  everything;  entirety;  absolutely (not);  (not) at all;  (none) whatsoever
 to be;  to exist;  to have;  to be located;  to be equipped with;  to happen
 that is to say;  that is;  in short;  in brief;  clogging;  obstruction;  shrinkage
 called;  named;  as many as;  as much as;  all ...;  every single ...
 conclusion from reasoning, judgement or calculation based on something read or heard;  reason;  cause;  meaning;  circumstances;  situation
 at;  in;  at;  when;  by;  with;  and then
 question (e.g. on a test);  problem;  problem (e.g. societal, political);  question;  question (i.e. doubt);  public discussion
 this;  last (couple of years, etc.);  these;  you (as in "you liar")
 room;  chamber;  apartment;  flat;  stable
 discovery;  detection;  finding