C31232233133313221211113313331333132313331121133133313232332311   >>    C3123223313331322121111331333133313231333112113313331323233231   <<    C31232233133313221211113313331333132313331121133133313232332313   >>      C31232233133313221211113313331333132313331121133133313232332312   >>