C1111133313331323223313331333133313331323131211113313221322123321   >>    C111113331333132322331333133313331333132313121111331322132212332   <<    C1111133313331323223313331333133313331323131211113313221322123323   >>      C1111133313331323223313331333133313331323131211113313221322123322   >>