C312312111111331312111133133313231333133313112331333132322331321   >>    C31231211111133131211113313331323133313331311233133313232233132   <<    C312312111111331312111133133313231333133313112331333132322331323   >>      C312312111111331312111133133313231333133313112331333132322331322   >>