C1111133313331323223313331333133313331333131121133133313331333133313112221221   >>    C111113331333132322331333133313331333133313112113313331333133313331311222122   <<    C1111133313331323223313331333133313331333131121133133313331333133313112221223   >>      C1111133313331323223313331333133313331333131121133133313331333133313112221222   >>