One example is the Prologue rhyme scheme:
Two households, both alike in dignity, A
In fair Verona, where we lay our scene, B
From ancient grudge break to new mutiny, A
Where civil blood makes civil hands unclean. B
From forth the fatal loins of these two foes C
A pair of star-crossed lovers take their life; D
Whose misadventured piteous overthrows C
Doth with their death bury their parents' strife. D
The fearful passage of their death-mark'd love, E
And the continuance of their parents' rage, F
Which, but their children's end, naught could remove, E
Is now the two hours' traffic of our stage; F
The which if you with patient ears attend, G
What here shall miss, our toil shall strive to mend. G