preferred_name: formate(in) + H(+)(in) <=> formate(out) + H(+)(out)
preferred_name_lc: formate(in) + h(+)(in) <=> formate(out) + h(+)(out)
label: formate(in) + H(+)(in) <=> formate(out) + H(+)(out)
label_lc: formate(in) + h(+)(in) <=> formate(out) + h(+)(out)