function solve(n){
    let arr = 'ATCGTTAGGG'.split('')
    for(let i = 1; i <= n; i++){
        let [a, b] = arr.splice(0,2)
        if(i === 1 || i % 4 === 1){
            console.log(`**${a}${b}**`);
        }
        else if(i === 2 || i % 4 === 2){
            console.log(`*${a}--${b}*`);
        }
        else if(i === 3 || i % 4 === 3){
            console.log(`${a}----${b}`);
        }
        else if(i === 4 || i % 4 === 0){
            console.log(`*${a}--${b}*`);
        }

        arr.push(a)
        arr.push(b)
    }
}