C1111233131211111211113313331323133313231333133313221311331311322121   >>    C111123313121111121111331333132313331323133313331322131133131132212   <<    C1111233131211111211113313331323133313231333133313221311331311322123   >>      C1111233131211111211113313331323133313231333133313221311331311322122   >>