C11111333133313232233133313331333132313331333133313311232321321   >>    C1111133313331323223313331333133313231333133313331331123232132   <<    C11111333133313232233133313331333132313331333133313311232321323   >>      C11111333133313232233133313331333132313331333133313311232321322   >>