Formed by itself.

plural of verb form

(grammar) A specific instance or form of a verb, as opposed to the entire verb taken in the abstract.

Alternative form of T-form

Alternative form of V-form

plural of splice form

An isoform produced by alternative splicing of RNA transcripts

(linear algebra) row echelon form / (linear algebra) column echelon form

present participle of back-form

simple past tense and past participle of back-form