C11111333133313232233133313331333133313231312111113113313231333131133133323231   >>    C1111133313331323223313331333133313331323131211111311331323133313113313332323   <<    C11111333133313232233133313331333133313231312111113113313231333131133133323233   >>      C11111333133313232233133313331333133313231312111113113313231333131133133323232   >>