C11111333133313232233133313331333133313231312111133132213331121321   >>    C1111133313331323223313331333133313331323131211113313221333112132   <<    C11111333133313232233133313331333133313231312111133132213331121323   >>      C11111333133313232233133313331333133313231312111133132213331121322   >>