Braided lines form a PANTOUM

The pantoum is derived from a Malaysian form of interlocking four-line stanzas in which lines 2 and 4 of one stanza are used as lines 1 and 3 of the next. The lines may be of any length, and the poem can go on for an indefinite number of stanzas; it may be completed with a final stanza that uses lines 1 and 3 of the first stanza as lines 4 and 2 of the last, closing the circle of the poem.  As with recursion, each stanza provides an impetus for the next.