C12313211232233312111111312111133133313331323133313331122332321133121311   >>    C1231321123223331211111131211113313331333132313331333112233232113312131   <<    C12313211232233312111111312111133133313331323133313331122332321133121313   >>      C12313211232233312111111312111133133313331323133313331122332321133121312   >>