billing, chilling, dilling, drilling, filling, grilling, hilling, killing, milling, pilling, railing, rawling, rearing, reeling, rehling, reiling, ribbing, ridding, ridling, rigging, ringing, ringling, ripping, roehling, rohling, roiling, roling, rolling, ruling, schilling, shilling, thrilling, tilling, trilling, willing, wringing