indicates sentence topic;  indicates contrast with another option (stated or unstated);  adds emphasis
 to seize;  to catch;  to obtain;  to acquire;  to understand;  to grasp
 extent;  scope;  sphere;  range;  span
 to spread;  to extend;  to unfold;  to open;  to scatter about;  to spread around
 underground;  below the ground;  world of the dead;  the grave;  underground (activities, movement, etc.);  secret
 waterway;  canal;  channel;  swimming pool lane
 et cetera;  etc.;  or something;  the likes of;  for example;  for instance
 to consider;  to eye the possibility (of);  to bring into view
 to continue;  to keep up;  to keep on
 if;  when;  and;  with;  used for quoting (thoughts, speech, etc.);  promoted pawn;  indicates a question
 to come out;  to appear;  to turn up;  to emerge
 don't;  do;  hey;  listen;  now, ...;  well, ...
 now that you mention it;  come to think of it;  that reminds me;  on that subject;  speaking of which
 is that so? (generally rhetorical)
 in that way;  thus;  so;  so?
 to say;  to utter;  to name;  to call;  to go (e.g. "the alarm went ping");  to make a noise
 thing;  matter;  incident;  occurrence;  circumstances;  situation;  work
 the expectation is that ...;  the reason is that ...;  the fact is that ...;  the explanation is that ...;  it is that ...
 radio (communication);  wireless;  not using wires
 correspondence;  communication;  transmission;  news;  signal;  telecommunications
 sound;  noise;  note;  fame;  Chinese-derived character reading
 medium;  average;  moderation;  middle school;  China;  volume two (of three);  during (a certain time when one did or is doing something)
 new;  neo-;  newness;  novelty;  Gregorian calendar;  Xin dynasty (China, 9-23 CE)
 lodging;  inn;  house;  home;  home of a servant's parents (or guarantor, etc.)
 control;  check;  restraint;  inhibition
 flight;  desertion;  escape
 discovery;  detection;  finding
 potentiality;  likelihood;  possibility;  availability
 existing (at the present moment);  alright;  acceptable;  to be (usu. of inanimate objects);  to have
 aid;  assistance;  help;  cheering;  rooting (for);  support
 appeal;  call for something;  request;  axiom
 place;  location;  room;  space;  basho;  wrestling tournament
 district of a town;  city block (of irregular size)
 alright;  all right;  right on;  looking good;  OK;  okay
 to be separated;  to be apart;  to leave;  to go away;  to leave (a job, etc.);  to quit
 to turn back (e.g. half-way);  to return;  to go back;  to recover (e.g. something lost);  to be returned;  to rebound
 you;  buddy;  monarch;  ruler;  he;  she
 still;  as yet;  (not) yet;  more;  (more) still;  at least
 no good;  not serving its purpose;  hopeless;  wasted;  cannot;  must not
 indicates a question;  or;  whether or not;  some- (e.g. something, someone);  hmm;  huh;  very
 teacher;  instructor;  sensei;  title or form of address for a teacher, master, doctor, lawyer, etc.;  intimate or teasing form of address; (arch.)  one's elder
 now;  soon;  already;  yet;  further;  more
 how;  in what way;  how about
 to become;  to get;  to result in;  to turn out;  to consist of;  to be composed of;  to be completed
 always;  all the time;  never;  usual;  regular