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6 letter words:

incubi10,

5 letter words:

cumin9, mucin9, nimbi9,

4 letter words:

numb8, mini6, muni6, unci6,

3 letter words:

bum7, cub7, cum7, mib7, mic7, bin5, bun5, mun5, nib5, nim5, nub5,

2 letter words:

bi4, mi4, mu4, um4, in2, nu2, un2,