One (1) Two (2) Three (3) Four (4) Five (5) Six (6) Seven (7) Eight (8) Nine (9) Ten (10) Eleven (11) Twelve (12) Thirteen (13) Fourteen (14) Fifteen (15) Sixteen (16) Seventeen (17) Eighteen (18) Nineteen (19) Twenty (20) https://arabicwherever.github.io/english-trainers/berlits-qa.html