endsoz
twelve
A word. Many groups of letters is called a sentence(:
Mailbox
Queue. Take away the four letters UEUE and you are left with Q.
As many as are requireed to make a legitimate word.
dozens
There is no twelve letter word spelled with the letters 'ntrarxetisan'.
Twelve has six letters, seventeen has nine.
twelve
considerably
The letters in "remain" can also be used to spell "marine" or "airmen".
sixty-twelve
battlefields
Dozens. Take s away and you have dozen.
You are asking us to construct a seven letter word, using twelve letters. This does not seem to be mathematically possible.
Dozens
There isn't a twelve letter word, but if you add another letter "n" you get: entertain met (add letter "n") entertainment