C1111233131211111211113313331333133313211231211331323133313331333221312331   >>    C111123313121111121111331333133313331321123121133132313331333133322131233   <<    C1111233131211111211113313331333133313211231211331323133313331333221312333   >>      C1111233131211111211113313331333133313211231211331323133313331333221312332   >>