C21221212121211331313233313131323223313232113313131133132322333121   >>    C2122121212121133131323331313132322331323211331313113313232233312   <<    C21221212121211331313233313131323223313232113313131133132322333123   >>      C21221212121211331313233313131323223313232113313131133132322333122   >>