#import<ios>
int h,w,i,p;char s[1<<20];main(){scanf("%d%d %[^a]",&h,&w,s);for(i=h*=++w;s[--i]^82;);for(;s[i=(p=i-~w)%h-(i%w>w-3)*~-w]&4?:!printf(s[i]%2?"%d %d":"loop",p/w,p%w););}