Complete failure of Mullerian duct fusion will result in:
In uterus didelphys there is complete lack of fusion of Mullerian ducts with a double uterus, double cervix, and a double vagina. Ref: Shaw's Textbook of Gynaecology, 12th Edition, Page 62 ; Textbook of Gynecology By D C Dutta, 4th Edition, Page 42
Uterus didelphys
Arcuate uterus
Subseptate uterus
Unicornuate uterus