C1111233133313231133133313331333133313231312111133131211113313331122111   >>    C111123313331323113313331333133313331323131211113313121111331333112211   <<    C1111233133313231133133313331333133313231312111133131211113313331122113   >>      C1111233133313231133133313331333133313231312111133131211113313331122112   >>