C21221212121211331313233313131133132333132313223313232233132313223331   >>    C2122121212121133131323331313113313233313231322331323223313231322333   <<    C21221212121211331313233313131133132333132313223313232233132313223333   >>      C21221212121211331313233313131133132333132313223313232233132313223332   >>