val make_variables_aux :
'count 'types 'arity_a 'arity_b 'positive 'negative 'positives 'negatives 'subpositive 'subnegative.
('count, 'types) Refl__.Desc.length ->
('count, 'positives) Refl__.Desc.length ->
('positives, 'positive, 'subpositive) Refl__.Desc.append ->
('count, 'negatives) Refl__.Desc.length ->
('negatives, 'negative, 'subnegative) Refl__.Desc.append ->
('arity_a, 'arity_b, 'positive, 'negative) M.t ->
('types, 'arity_a, 'arity_b, 'subpositive, 'subnegative) make_variablesval make_variables :
('a, 'b) Refl__.Desc.length ->
('a, 'c, 'd, 'e, 'f, 'g, 'h, 'i, 'j, 'k, 'l) Refl__.Desc.subvariables ->
('m, 'n, 'd, 'e) M.t ->
('b, 'm, 'n, 'j, 'k) make_variables