C1111233133313231133133313231333133313113313113313231333131132211111   >>    C111123313331323113313331323133313331311331311331323133313113221111   <<    C1111233133313231133133313231333133313113313113313231333131132211113   >>      C1111233133313231133133313231333133313113313113313231333131132211112   >>