i
doubledouble
A
leftRepeatsinglesinglesinglesingle
1.
singlesingle
Repeat
singlesinglerightRepeat
2.
singlesingledouble
B
leftRepeatsinglesinglesinglesingle
singlesingle
Repeat
singlesingledouble
A
doublesinglesinglesinglesingle
1.
singlesingle
Repeat
singlesinglerightRepeat
2.
singlesingledouble