C1111133313331323223313331333133313331323131211113313113313221211333121   >>    C111113331333132322331333133313331333132313121111331311331322121133312   <<    C1111133313331323223313331333133313331323131211113313113313221211333123   >>      C1111133313331323223313331333133313331323131211113313113313221211333122   >>