pronouns, the possessive form of the personal pronoun is used, as in "I like him": [Dw i'n ei hoffi], literally, "am I his liking" – "I like you" is [Dw i'n dy hoffi] ("am I your liking"). Very informally, the pronouns are often heard in their normal subject/object form and aping English word order: ("Am I liking you"). Pronoun doubling In colloquial Welsh, possessive pronouns, whether they are used to mean "my", "your", etc. or to indicate the direct object of a verbnoun, are commonly reinforced by the use of the corresponding personal pronoun after the noun or verbnoun: "his house" (literally "his house of him"), "I like you" ("I am [engaged in the action of] your liking of you"), etc. The "reinforcement" (or, simply, "redoubling") adds no emphasis in the colloquial register. While the possessive pronoun alone may be used, especially in more formal registers, as shown above, it is considered incorrect to use only the personal pronoun. Such usage is nevertheless sometimes heard in very colloquial speech, mainly among young speakers: ("Where are we going? Your house or my house?"). Grammar Welsh is a moderately inflecting language. Verbs inflect at least for person, number and mood, whilst nouns do for number and there is a masculine feminine distinction, of which the latter is marked via consonant mutation. Colloquial and literary grammar show more differences than in English. Counting system The traditional counting system used in the Welsh language is vigesimal, i.e. it is based on twenties, as in standard French numbers 70 (, literally "sixty-ten") to 99 (, literally "four twenty nineteen"). Welsh numbers from 11 to 14 are "x on ten" (e.g. : 11), 16 to 19 are "x on fifteen" (e.g. : 16), though 18 is , "two nines"; numbers from 21 to 39 are "1–19 on twenty"(e.g. : 30), 40 is "two twenties", 60 is "three twenties", etc. This form continues to be used, especially by older people, and it is obligatory in certain circumstances (such as telling the time, and in ordinal numbers). There is also a decimal counting system, which has become relatively widely used, though less so in giving the time, ages, and dates (it features no ordinal numbers). This system originated in Patagonian Welsh and was subsequently introduced to Wales in the 1940s. Whereas 39 in the vigesimal system is ("four on fifteen on twenty") or even ("two twenty minus one"),