var numSheep = 4;
var monthsToPrint = 12;
for(var monthNumber = 1; monthNumber <= monthsToPrint; monthNumber++) {
if (numSheep > 10000) {
numSheep = numSheep / 2;
console.log("Removing " + numSheep + " sheep from the population. Phew!");
}
numSheep = numSheep * 4;
console.log("There will be " + numSheep + " sheep after " + monthNumber + " month(s)!");
}