(a)14[√4+2√2+√4−2√2],14[√4+2√2−√4−2√2](b)12[√4+2√2+√4−2√2],12[√4+2√2−√4−2√2](c)13[√4+2√2+√4−2√2],14[√4+2√2−√4−2√2](d)14[√4+2√2−√4−2√2],14[√4+2√2+√4−2√2]