C1111233131211111211113313331333133313332313113313331322331323331323223321   >>    C111123313121111121111331333133313331333231311331333132233132333132322332   <<    C1111233131211111211113313331333133313332313113313331322331323331323223323   >>      C1111233131211111211113313331333133313332313113313331322331323331323223322   >>