C1111233131211111211113313331333133313211231211111333132211322131   >>    C111123313121111121111331333133313331321123121111133313221132213   <<    C1111233131211111211113313331333133313211231211111333132211322133   >>      C1111233131211111211113313331333133313211231211111333132211322132   >>