Case (9). η = i • η : F → S 2 defines a special almost orbifold covering of degree 4.

Case (9). η = i • η : F → S 2 defines a special almost orbifold covering of degree 4.

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We extend the result of \cite{Dutra} to generating pairs of triangle groups, that is, we show that any generating pair of a triangle group is represented by a special almost orbifold covering.