As stated up there in my comment, Heatran is an ideal counter to Clefable. Standard Clefable sets have nothing to hit it. All you really need to do is keep it relatively healthy and you can stop Clefable easily. I suggest Heatran over other Steel types, and there is two reasons for this. The first is its Fire immunity, as most good Clefable sets run Flamethrower.
Definition. The genitive is the case (or function) of an inflected form of a noun or pronoun showing ownership, measurement, association, or source. Adjective: genitival. The suffix -'s on nouns is a marker of genitive case in English.
Nouns, noun phrases and some pronouns generally form a possessive with the suffix -'s (or in some cases just by adding an apostrophe to an existing-s). This form is sometimes called the Saxon genitive, reflecting the suffix's derivation from a genitive case ending in Old English, or Anglo-Saxon.here is also the genitive of measure: forms such as a five-mile journey and a ten-foot pole use what is actually a remnant of the Old English genitive plural which, ending in /a/, had neither the final /s/ nor underwent the foot/feet vowel mutation of the nominative plural.