1
general::
Phrase(s): form someone or something into something
to shape someone or something into something. • We formed the people into a line. • Kathy formed the clay into a small elephant., Phrase(s): form (up) into something
[for a group of people] to assume the shape of something. • The boys formed up into a jagged line. • We’ll form into a line.
McGrawhill's American Idioms And Phrasal Verbs