C11111333133313232233133313331333131133131211111333132313332321   >>    C1111133313331323223313331333133313113313121111133313231333232   <<    C11111333133313232233133313331333131133131211111333132313332323   >>      C11111333133313232233133313331333131133131211111333132313332322   >>