2648. This verse is employed by the early dramatists, usually either as
a _clausula_ (2536) or in groups of two lines each. Terence generally
uses it in the former way, Plautus in the latter. The scheme of
substitutions is:--
-́ ⏑͐ | -̇ ⏑͐ | -́ ⌃
⏑́ ⏑ | ⏑̇ ⏑ |
-́ ⏖ | -̇ ⏖ |
⏑́ ⏑ > | ⏑̇ ⏑ > |