C1111233131211111211113313231333133313331323221211113313311211113313222323311   >>    C111123313121111121111331323133313331333132322121111331331121111331322232331   <<    C1111233131211111211113313231333133313331323221211113313311211113313222323313   >>      C1111233131211111211113313231333133313331323221211113313311211113313222323312   >>