val all8 :
('a, 'b) Stdlib.result ->
('c, 'd) Stdlib.result ->
('e, 'f) Stdlib.result ->
('g, 'h) Stdlib.result ->
('i, 'j) Stdlib.result ->
('k, 'l) Stdlib.result ->
('m, 'n) Stdlib.result ->
('o, 'p) Stdlib.result ->
('a * 'c * 'e * 'g * 'i * 'k * 'm * 'o, [> `Msg of string ]) Stdlib.result