C21221212121211331313233313131133132333132313223313233313231333131   >>    C2122121212121133131323331313113313233313231322331323331323133313   <<    C21221212121211331313233313131133132333132313223313233313231333133   >>      C21221212121211331313233313131133132333132313223313233313231333132   >>