The aim of this research is to establish which lexical forms in Word2 position are available to the child in liaison processes. It is known that the child makes many errors at the beginning of the acquisition of liaison and elision, of the sort "la noreille, le zours, petit néléphant, un zéléphant...". These variants argue in favour of the encoding of the liaison consonant at the beginning of Word2 in the early stages of the acquisition of liaison. To test this hypothesis, we present the results of two studies (one transversal, the other longitudinal) of French-speaking children between 2;6 and 6;3. The data collected allow us to conclude that the children have, at the outset, in their mental lexicon, Word2 forms with both an initial consonant and an initial vowel. These observations suggest that the child posseses several exemplars of the same Word2.