Letters that make positive feedback
s, a, o, b, d, e, f, k, p, c, t, i, v are letters that make 'positive feedback'
Words within positive feedback
os, OS, IT, DBA, BA, feedback, posit, ti, si, feed, PO, Ba, AC, fee, dB, sit, SI, ED, EE, positive, iv, back, IV, Po, Ac, Db, Fe, Os, Si, Ti are words within 'positive feedback'