addListToUFM fm key_elt_pairs = addListToUFM_C use_snd fm key_elt_pairs
addListToUFM_Directly fm uniq_elt_pairs = addListToUFM_directly_C use_snd fm uniq_elt_pairs
addListToUFM_C combiner fm key_elt_pairs
addListToUFM fm key_elt_pairs = addListToUFM_C use_snd fm key_elt_pairs
addListToUFM_Directly fm uniq_elt_pairs = addListToUFM_directly_C use_snd fm uniq_elt_pairs
addListToUFM_C combiner fm key_elt_pairs