C1111233133313231133133313331333133313231312111133133313123131122111   >>    C111123313331323113313331333133313331323131211113313331312313112211   <<    C1111233133313231133133313331333133313231312111133133313123131122113   >>      C1111233133313231133133313331333133313231312111133133313123131122112   >>