C1111233133313231133133313231333133313113313113313231333132311331221231   >>    C111123313331323113313331323133313331311331311331323133313231133122123   <<    C1111233133313231133133313231333133313113313113313231333132311331221233   >>      C1111233133313231133133313231333133313113313113313231333132311331221232   >>