long es[4][2d5];
int en[4],er[4],l[2];
int aa[2d5];

{
	int @n;
	rep(i,n){
		char @c,@x;
		int @y;
		int k=(c=='R'?0:2)|(x=='R'?0:1);
		es[k][en[k]++]=(ll)y<<32|i;
	}
	rep(k,4){
		sort(es[k],es[k]+en[k]);
	}
	rep(i,n){
		int a=0,b=0;
		rep(k,4){
			if(er[k]<en[k]&&es[k][er[k]]>>32==l[k&1]){
				a|=1<<k;
				b|=(int[]){2,12,3,4}[k];
			}
		}
		int k=ffs(a&~b)-1;
		if(k<0){
			wt("No");
			exit(0);
		}
		aa[i]=es[k][er[k]++]+1;
		++l[k>>1];
	}
	wt("Yes");
	wt(aa(n));
}