#import <Foundation/Foundation.h>
int main() {
	@autoreleasepool{
		int h,w;
		scanf("%d %d",&h,&w);
		for(int i=1;i<=h;i++){
			for(char j='A';j<'A'+w;j++) {
				char s[6] = {'\0'};
				scanf("%s ",s);
				if ([[NSString stringWithFormat:@"%s", s] isEqualToString:@"snuke"]) {
					printf("%c%d",j,i);
					return 0;			}
			}
		}
	}
}