C11111333133313232233133313331333131133131211111333132322312321   >>    C1111133313331323223313331333133313113313121111133313232231232   <<    C11111333133313232233133313331333131133131211111333132322312323   >>      C11111333133313232233133313331333131133131211111333132322312322   >>