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