C1111121111331311211331333133313113313331313231333132233131232313221   >>    C111112111133131121133133313331311331333131323133313223313123231322   <<    C1111121111331311211331333133313113313331313231333132233131232313223   >>      C1111121111331311211331333133313113313331313231333132233131232313222   >>