C11111333133313232233133313331333133313331322121111113313112131   >>    C1111133313331323223313331333133313331333132212111111331311213   <<    C11111333133313232233133313331333133313331322121111113313112133   >>      C11111333133313232233133313331333133313331322121111113313112132   >>