; @origtpdbfilename ./TRS/SK90/2.21.trs
; @xtcfilename "./TRS_Standard/SK90/2.21.xml"
(format TRS)
(fun bin 2)
(fun |0| 0)
(fun s 1)
(fun + 2)
(rule (bin x |0|) (s |0|))
(rule (bin |0| (s y)) |0|)
(rule (bin (s x) (s y)) (+ (bin x (s y)) (bin x y)))