C312312111133131212111133133313231333132322121111331333112323221   >>    C31231211113313121211113313331323133313232212111133133311232322   <<    C312312111133131212111133133313231333132322121111331333112323223   >>      C312312111133131212111133133313231333132322121111331333112323222   >>