C12313211232233312111111312111133133313331323133313331122332321211331111   >>    C1231321123223331211111131211113313331333132313331333112233232121133111   <<    C12313211232233312111111312111133133313331323133313331122332321211331113   >>      C12313211232233312111111312111133133313331323133313331122332321211331112   >>