Linear OA(4¹⁷⁷, 4437, F₄, 37) (dual of [4437, 4260, 38]-code), using 327 step VarÅ¡amov–Edel lengthening with (r_i) = (3, 1, 1, 1, 0, 0, 1, 5 times 0, 1, 8 times 0, 1, 14 times 0, 1, 22 times 0, 1, 35 times 0, 1, 52 times 0, 1, 75 times 0, 1, 102 times 0) based on linear OA(4¹⁶³, 4096, F₄, 37) (dual of [4096, 3933, 38]-code), using

• an extension C_e(36) of the primitive narrow-sense BCH-code C(I) with length 4095 = 4⁶−1, defining interval I = [1,36], and designed minimum distance d ≥ |I|+1 = 37 [i]