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From letters S, A, M, B, A, I, N, G  I made following words

8 letter words

sambaing[13]

7 letter words

gambias[12], abasing[10], bisnaga[10], magians[10], siamang[10]

6 letter words

gambia[11], bagman[11], gambas[11], baaing[9], magian[9], amigas[9], basing[9], gasman[9], mangas[9], gamins[9], animas[8], manias[8]

5 letter words

gamba[10], gambs[10], samba[9], bimas[9], iambs[9], amiga[8], manga[8], gamin[8], agmas[8], gamas[8], agism[8], sigma[8], bangs[8], amain[7], amnia[7], anima[7], mania[7], amias[7], basin[7], nabis[7], sabin[7], manas[7], amins[7], mains[7], minas[7], again[6], saiga[6], angas[6], sanga[6], gains[6], signa[6]

4 letter words

gamb[9], bima[8], iamb[8], bams[8], mibs[8], agma[7], gama[7], magi[7], bang[7], bags[7], gabs[7], bigs[7], gibs[7], gams[7], mags[7], migs[7], amia[6], bani[6], mana[6], amin[6], main[6], mina[6], abas[6], baas[6], bias[6], isba[6], amas[6], masa[6], aims[6], amis[6], sima[6], bans[6], nabs[6], bins[6], nibs[6], snib[6], mans[6], nims[6], anga[5], agin[5], gain[5], agas[5], saga[5], nags[5], sang[5], snag[5], gins[5], sign[5], sing[5], anas[4], ansa[4], ains[4], anis[4], sain[4]

3 letter words

bam[7], mib[7], bag[6], gab[6], big[6], gib[6], gam[6], mag[6], mig[6], aba[5], baa[5], ama[5], aim[5], ami[5], ban[5], nab[5], bin[5], nib[5], man[5], nam[5], nim[5], abs[5], bas[5], sab[5], bis[5], sib[5], mas[5], ism[5], mis[5], sim[5], aga[4], gan[4], nag[4], gin[4], ags[4], gas[4], sag[4], ana[3], ain[3], ani[3], aas[3], ais[3], ins[3], sin[3]

2 letter words

ab[4], ba[4], bi[4], am[4], ma[4], mi[4], ag[3], aa[2], ai[2], an[2], na[2], in[2], as[2], is[2], si[2]