Letters that make past progressive tense
s, a, o, e, g, n, p, r, t, i, v are letters that make 'past progressive tense'
Words within past progressive tense
PA, RES, re, te, si, PR, Pa, en, progressive tense, past progressive, SE, Ro, SI, SS, progressive, past, pro, iv, ten, tense, as, progress, pas, IV, AS, ogre, ogress, Re, pa, As, Es, Pr, Se, Si, Te are words within 'past progressive tense'