C1111233133313231133133313331333133313231312111133133313223313331   >>    C111123313331323113313331333133313331323131211113313331322331333   <<    C1111233133313231133133313331333133313231312111133133313223313333   >>      C1111233133313231133133313331333133313231312111133133313223313332   >>