mArr = [['a','b'],['c','d'],['e','f']]
for d in a:
print d[1]
mArr = [['a','b'],['c','d'],['e','f']]
for(d in a){
console.log(d[1])
}
mArr.forEach(function(d){
console.log(d[1]);
});
var mArr = [['a','b'],['c','d'],['e','f']]
for(var d in mArr){
console.log(mArr[d][1])
}
var arr= [['a','b'],['c','d'],['e','f']]
for (var i in arr) {
console.log(arr[i][1])
}