C11111333133313232233133313331333133313231312331323133313233222313111   >>    C1111133313331323223313331333133313331323131233132313331323322231311   <<    C11111333133313232233133313331333133313231312331323133313233222313113   >>      C11111333133313232233133313331333133313231312331323133313233222313112   >>