nnormalize;
##[ ##1: #H; napply (λx:P.x)
##| ##2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30: #H;
nnormalize;
##[ ##1: #H; napply (λx:P.x)
##| ##2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30: #H;