When they wanted to send a letter, they would write the letter on clay and then they would make an envelope out of clay and put the letter in it and send it off.
(they; wanted; to send a letter) Context(they wanted,List([5, 16))):(they; wanted to send; a letter) (they; send; it; off; T:then) (they; would write; the letter on clay; T:When they wanted to send a letter) (they; would make; an envelope; out of clay; T:then) (they; put; the letter; in it; T:When they wanted to send a letter; T:then)
they wanted,List([5, 16))
they they they they they they
wanted wanted to send send would write would make put
to send a letter
a letter
it off T:then
the letter on clay T:When they wanted to send a letter
an envelope out of clay T:then
the letter in it T:When they wanted to send a letter T:then