. Si-on-part, 3| on peut formuler trois hypothèses : la première prend en considération la combinaison d'une 2M 1 et une 1M, les autre deux la combinaison d'une 3T avec une 2M 1 . Dans les premier cas, les sous-structures

. Enfin, hypothèse de la combinaison d'une sous

3. Avec-une and 1. |5, 5| si les orientations originales étaient |1

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