x1 is a process with inputs x2, outputs/results x3, passing through steps/stages x4.
x2 resource (= selru'e, but also ru'etci, (ru'er-/ruc- or selru'e-/selruc- modifying:) selxaksu, selsabji, livla). See also cmavo list pu'e, farvi, tadji, grute, tcini.