C1111133313331323223313331333133313113313133112111133132213123221   >>    C111113331333132322331333133313331311331313311211113313221312322   <<    C1111133313331323223313331333133313113313133112111133132213123223   >>      C1111133313331323223313331333133313113313133112111133132213123222   >>