C1111121111331311211331333133313331333133313231333133313331333133313233133211   >>    C111112111133131121133133313331333133313331323133313331333133313331323313321   <<    C1111121111331311211331333133313331333133313231333133313331333133313233133213   >>      C1111121111331311211331333133313331333133313231333133313331333133313233133212   >>