C1111133313331323223313331333133313331323133313331333112121123313233212311   >>    C111113331333132322331333133313331333132313331333133311212112331323321231   <<    C1111133313331323223313331333133313331323133313331333112121123313233212313   >>      C1111133313331323223313331333133313331323133313331333112121123313233212312   >>