5B3. Example 1:

[8], 328 p.

[2], 328, [6] p.

iii, [1], 88 p.

64 p., [2], 16 leaves

(the unnumbered leaves introduce the following section)

64, [4] p., 16 leaves

(The unnumbered pages are not closely associated with either adjacent section and one or more are printed on a verso)