C1111233133313231133133313331333133313231312111133133313112113223231   >>    C111123313331323113313331333133313331323131211113313331311211322323   <<    C1111233133313231133133313331333133313231312111133133313112113223233   >>      C1111233133313231133133313331333133313231312111133133313112113223232   >>