2n - 4 est le reste si, et seulement si, 2   n. 3 (3k 2) (3k 4) (k 2)
eyeo4 eyeox eyeo7 eyeoa eyeob eyeow eyeoe eyeo5 eyeon eyeoh eyeo1 eyeo3 eyekg eyekz eyekj eyeks eyeku eyek8 eyek4 eyekx eyek7 eyeka eyekb eyekw eyeke eyek5 eyekn eyekh eyek1 eyek3 eye3g eye3z eye3j eye3s eye3u eye38 eye34 eye3x eye37 eye3a eye3b