C1111233131211111211113313231333133313331323221211113313311211111332233131   >>    C111123313121111121111331323133313331333132322121111331331121111133223313   <<    C1111233131211111211113313231333133313331323221211113313311211111332233133   >>      C1111233131211111211113313231333133313331323221211113313311211111332233132   >>