C1231321123223331211111131211113313331333133313223223312232211211332331   >>    C123132112322333121111113121111331333133313331322322331223221121133233   <<    C1231321123223331211111131211113313331333133313223223312232211211332333   >>      C1231321123223331211111131211113313331333133313223223312232211211332332   >>