C11111211113313112113313331333133313331333132332111133132333221   >>    C1111121111331311211331333133313331333133313233211113313233322   <<    C11111211113313112113313331333133313331333132332111133132333223   >>      C11111211113313112113313331333133313331333132332111133132333222   >>