numbers ∕ four-digit numbers 20xxtable of four-digit numbers ⫽ 2000 ― 209920x020x120x220x320x420x520x620x720x820x92000200120022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024202520262027202820292030203120322033203420352036203720382039204020412042204320442045204620472048204920502051205220532054205520562057205820592060206120622063206420652066206720682069207020712072207320742075207620772078207920802081208220832084208520862087208820892090209120922093209420952096209720982099
@ifckr.v.0.