C1231321123223331211111131211113313331333132313331333121333112121331323222221   >>    C123132112322333121111113121111331333133313231333133312133311212133132322222   <<    C1231321123223331211111131211113313331333132313331333121333112121331323222223   >>      C1231321123223331211111131211113313331333132313331333121333112121331323222222   >>