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