C1111233133313231133133313331333133313223313133313132313232233131111   >>    C111123313331323113313331333133313331322331313331313231323223313111   <<    C1111233133313231133133313331333133313223313133313132313232233131113   >>      C1111233133313231133133313331333133313223313133313132313232233131112   >>