méthode (4) Perception (4) vecteur (3) Process (Law) (3) Persons (3) Human beings (3) Head (3) Gravity (3) Areas (3) corps (3) puits (2) information (2) alignement (2) Reliability (2) Correspondence (2) Correspondence (2) Teenagers (2) Students (2) Reliability (2) Posture (2) Orientation (2) Letters (2) Letter writing (2) Eye (2) Correspondence (2) Axes (2) Addition (2) Properties (2) Validity (2) Structure (2)