LF2 one-liner

def dlf2(e,d='',a=123,p=0,k="odBearBecauseHeIsVeryGoodSiuHungIsAGo"): return (lambda:d, (lambda:dlf2(e, d+chr(ord(e[a])-ord(k[p])), a+1, p+1),lambda:dlf2(e, d+chr(ord(e[a])-ord(k[0])), a+1, 1))[int(p == len(k))])[a != len(e)]()