C11111211113313112113313331333133313331333132212111133133313331333131131122321   >>    C1111121111331311211331333133313331333133313221211113313331333133313113112232   <<    C11111211113313112113313331333133313331333132212111133133313331333131131122323   >>      C11111211113313112113313331333133313331333132212111133133313331333131131122322   >>