i
doublesingledouble
B
leftRepeatsinglesinglesinglesingle
singlesinglesinglesingledouble
A
doublesinglesinglesinglesingle
singlesinglesinglesinglesingle
1.
singlesinglesinglesingledouble
B
doublesinglesinglesinglesingle
singlesinglesinglesinglerightRepeat
2.
C
leftRepeatsingle
Repeat
rightRepeatsinglerightRepeat