C12313211232233312111111312111133133313331323221312132213132321   >>    C1231321123223331211111131211113313331333132322131213221313232   <<    C12313211232233312111111312111133133313331323221312132213132323   >>      C12313211232233312111111312111133133313331323221312132213132322   >>