Rotate 1/4, 1/2, 3/4

From parallel lines, composed entirely of couples (e.g. facing lines, two-faced lines) only: Each box of 4 of the square works independently. As couples turn 1/4 toward promenade direction (giving a left-hand two-faced line). That new line does a Couples Hinge once for each 1/4 in the fraction the caller gives (caller must give a fraction).