C1111233131211111211113313331333133313211231211331323133313232212111111321   >>    C111123313121111121111331333133313331321123121133132313331323221211111132   <<    C1111233131211111211113313331333133313211231211331323133313232212111111323   >>      C1111233131211111211113313331333133313211231211331323133313232212111111322   >>