Let A ={–3, –2, –1, 0, 1, 2, 3} and R be a relation on A defined by xRy if and only if 2x – y∈{0, 1}. Let ℓ be the number of elements in R. Let m and n be the minimum number of elements required to be added in R to make it reflexive and symmetric relations, respectively. Then ℓ + m + n is equal to :-