C12313211232233312111111312111133133313331333132232233122322213323321   >>    C1231321123223331211111131211113313331333133313223223312232221332332   <<    C12313211232233312111111312111133133313331333132232233122322213323323   >>      C12313211232233312111111312111133133313331333132232233122322213323322   >>