C312312111111331312111133133313231333133313112331323223313233131   >>    C31231211111133131211113313331323133313331311233132322331323313   <<    C312312111111331312111133133313231333133313112331323223313233133   >>      C312312111111331312111133133313231333133313112331323223313233132   >>