sulfate(out) + phosphate(in) + H(+)(in) => sulfate(in) + phosphate(out) + H(+)(out)
sulfate(out) + phosphate(in) + h(+)(in) => sulfate(in) + phosphate(out) + h(+)(out)
sulfate(out) + phosphate(in) + H(+)(in) => sulfate(in) + phosphate(out) + H(+)(out)
sulfate(out) + phosphate(in) + h(+)(in) => sulfate(in) + phosphate(out) + h(+)(out)