like;  similar to;  as with;  in the same way
 freely;  at liberty;  at will;  as one likes
 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
 riddle;  puzzle;  enigma;  enigmatic;  mysterious
 to be (of animate objects);  to exist;  to stay;  to be ...-ing;  to have been ...-ing
 yes;  indeed;  ha!;  what?;  huh?;  sigh
 noisy;  loud;  boisterous;  turbulent;  unsettled;  restless
 indicates emotion or admiration;  indicates emphasis;  I;  me;  wah!;  boo!
 right?;  isn't it?;  hey;  say;  you know;  you see;  will you?
 contacting;  (making) contact;  connection (with a train, bus, etc.);  joining (a railway line, etc.);  connection (between matters, incidents, etc.);  relation
 being on duty;  person on duty
 what!;  oh;  what the heck;  what the;  damn
 -like;  sort of;  similar to;  resembling
 to inform;  to notify;  to know;  to reign
 once;  one time;  one round;  one game;  one bout;  one heat
 supply;  supplying;  replenishment
 to be;  to exist;  to have;  to be located;  to be equipped with;  to happen
 called;  named;  as many as;  as much as;  all ...;  every single ...
 ordinary;  common;  free of charge;  unaffected;  as is;  only
 (not) anything;  (nothing) at all;  and everything else;  and all;  (not) at all;  (not) in the least
 to be aware of;  to know;  to notice;  to feel;  to understand;  to comprehend;  to remember
 to pass (time);  to spend;  to overdo (esp. of one's alcohol consumption);  to drink (alcohol); (arch.)  to take care of; (arch.)  to support
 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
 yes;  yeah;  hum;  hmmm;  oof
 but;  however;  even;  however;  no matter how;  ... or something;  either ... or ...
 filtration;  filtering;  percolation
 you have only to;  all you have to (do);  all that's required;  as long as;  if only
 drinking water;  potable water
 but;  however;  (and) yet;  nevertheless;  still;  for all that
 when;  at what time;  how soon;  normal times;  ordinary days
 in this way;  thus;  such;  uh...
 things like;  something like;  someone like;  such a thing as;  (the fact) that;  to think that
 to understand;  to comprehend;  to become clear;  to be known;  I know!;  I think so too!
 immediately;  right away;  at once;  easily;  readily
 to reach;  to touch;  to be delivered;  to arrive;  to be attentive;  to be scrupulous
 don't;  do;  hey;  listen;  now, ...;  well, ...
 to discover;  to find (e.g. an error in a book);  to locate;  to find (e.g. something missing);  to be used to seeing;  to be familiar with
 time;  hour;  period;  class