C1111233133313231133133313331333133313231312111133133313223313231322121   >>    C111123313331323113313331333133313331323131211113313331322331323132212   <<    C1111233133313231133133313331333133313231312111133133313223313231322123   >>      C1111233133313231133133313331333133313231312111133133313223313231322122   >>