Letters that make retention basin
s, a, o, b, e, n, r, t, i are letters that make 'retention basin'
Words within retention basin
rete, BA, re, ti, te, si, NT, Ba, en, SI, on, ten, as, in, sin, retention, basin, AS, IN, Io, ion, tent, Re, Sin, As, In, Si, Te, Ti, Asin, ret are words within 'retention basin'