C312312111111331312111133133313231333133313112331333132323323232131221   >>    C31231211111133131211113313331323133313331311233133313232332323213122   <<    C312312111111331312111133133313231333133313112331333132323323232131223   >>      C312312111111331312111133133313231333133313112331333132323323232131222   >>