#include<bits/stdc++.h>
#define LL long long
#define LLL __int128
#define uint unsigned
#define ldb long double
#define uLL unsigned long long
using namespace std;
int wtop,wlen,wstk[40];
char rdc[1<<14],wtc[1<<23],*rS,*rT;
#define gc() (rS==rT?rT=(rS=rdc)+fread(rdc,1,1<<14,stdin),(rS==rT?EOF:*rS++):*rS++)
#define pc(x) wtc[wlen++]=(x)
#define flush() fwrite(wtc,1,wlen,stdout),wlen=0
template<class T=int>inline T read(){
    T x=0;char ch;bool f=0;
    while(!isdigit(ch=gc()))if(ch=='-')f=!f;
    do x=(x<<1)+(x<<3)+(ch^48);while(isdigit(ch=gc()));
    return f?-x:x;
}
inline int read(char*const s){
    char *t=s,ch;
    while(!isgraph(ch=gc()));
    do *t++=ch;while(isgraph(ch=gc()));
    return *t=0,t-s;
}
template<class T>inline void write(T x){
    if(wlen>=8000000)flush();
    if(!x)return pc('0'),void();
    if(x<0)pc('-'),x=-x;
    while(x)wstk[wtop++]=x%10,x/=10;
    while(wtop)pc(wstk[--wtop]^48);
}
inline void write(char*const s){
    if(wlen>=8000000)flush();
    for(int i=0;*(s+i);pc(*(s+(i++))));
}
inline void write(const char*s){
    if(wlen>=8000000)flush();
    for(int i=0;*(s+i);pc(*(s+(i++))));
}
typedef pair<int,int> PII;
typedef tuple<int,int,int> TIII;
typedef tuple<int,int,int,int> TIIII;
const int N=1e4+5;
signed main(){
    int p=read(),q=read();
    if(p==0)write("1 1\n.");
    else if(p*3<=q*2){
        p*=3,q*=2;
        pc('1'),pc(' '),write(q),pc('\n');
        for(int i=0;i<p;i+=3)pc('#'),pc('#'),pc('.');
        for(int i=p;i<q;++i)pc('.');
    }
    else if(p==3&&q==4){
        write("4 4\n");
        write(".###\n");
        write("##.#\n");
        write("##.#\n");
        write(".###\n");
    }
    else if(p==7&&q==10){
        write("4 5\n");
        write(".####\n");
        write("##..#\n");
        write("##..#\n");
        write(".####\n");
    }
    else if(p==5&&q==7){
        write("4 14\n");
        write(".###..###..###\n");
        write("##.####.####.#\n");
        write("##.####.####.#\n");
        write(".###..###..###\n");
    }
    else if(p==4&&q==5){
        write("5 5\n");
        write("###.#\n");
        write(".####\n");
        write("##.##\n");
        write("####.\n");
        write("#.###\n");
    }
    else if(p==7&&q==9){
        write("6 18\n");
        write(".##.####.####.####\n");
        write(".####.####.####.##\n");
        write("##.####.####.##.##\n");
        write("####.####.##.####.\n");
        write("#.####.##.####.###\n");
        write("###.##.####.####.#\n");
    }
    else write("-1 -1");
    return flush();
}
/*
*/