numbers ∕ four-digit numbers 91xxtable of four-digit numbers ⫽ 9100 ― 919991x091x191x291x391x491x591x691x791x891x99100910191029103910491059106910791089109911091119112911391149115911691179118911991209121912291239124912591269127912891299130913191329133913491359136913791389139914091419142914391449145914691479148914991509151915291539154915591569157915891599160916191629163916491659166916791689169917091719172917391749175917691779178917991809181918291839184918591869187918891899190919191929193919491959196919791989199
@ifckr.v.0.