now that you mention it;  come to think of it;  that reminds me;  on that subject;  speaking of which
 extent;  degree;  limit;  bounds;  (span of) time;  (a) distance;  the state of
 in front (of);  before (e.g. a building);  before;  earlier;  (the) front;  frontal part;  forward
 coming flying in (migratory birds, airborne sand, pollen, etc.);  coming by airplane
 that being the case;  because of ...;  the reason is ...;  given that ...
 by any chance;  (should) it happen (that);  by some chance
 tool;  implement;  means;  furniture
 may;  might;  perhaps;  may be;  possibly
 normal;  ordinary;  normally;  ordinarily;  local train;  train that stops at every station
 but;  however;  provided that
 difficult to understand;  unintelligible;  abstruse
 necessary;  needed;  essential;  necessity;  need;  requirement
 learning;  scholarship;  study;  study of ...;  -ology;  -ics
 narrow-minded;  obstinate;  stubborn;  perverse;  unreasonable;  warped
 eccentric;  crank;  oddball
 creation;  founding;  initiating
 bright person;  talented student;  prodigy
 group with a common interest (e.g. students);  club (e.g. company sports club);  circle;  circle (shape)
 magic;  Magic Marker;  felt-tip pen;  magic number
 oh!;  good heavens!;  ugh!;  oh no!;  ah!;  the penny drops!
 comprehension;  consent;  understanding;  OK;  roger (on two-way radio)
 wish;  desire;  hope;  prospect;  expectation;  (one's) hopes
 to grant (request, wish);  to answer (prayer);  to fulfill (conditions);  to meet (requirements)
 this time;  now;  next time;  another time;  recently;  lately
 number (in a series);  (one's) turn;  watch;  guard;  rank;  standing;  bout
 yen (Japanese monetary unit);  circle
 middle;  centre;  center;  midpoint;  heart
 to obey respectfully;  to humble oneself;  to sit straight (upright, respectfully, attentively)
 bottle;  jar;  decanter;  flagon;  phial;  vial
 program (of events, music, etc.);  programme;  program (booklet);  brochure;  (computer) program;  programming
 tray;  family;  household;  O-Bon;  Bon Festival;  gambler's den
 red;  crimson;  Red;  communist; (arch.)  beautiful
 star (usu. not including the Sun);  planet (usu. not including Earth);  star (glyph, symbol, shape);  star (actor, player, etc.);  small dot;  spot;  star point (in go)
 conquest;  subjugation;  overcoming
 man;  male;  fellow;  guy;  male lover;  boyfriend
 book;  volume;  this;  present;  main;  head
 to pick up;  to find;  to gather
 and;  and then;  thus;  and now;  and finally
 splendid;  magnificent;  utter (esp. defeat);  total; (arch.)  something worth seeing; (arch.)  sight
 analysis;  analytical study;  parsing;  parse