wanwan\tdotii\tdoz\tbil\tdam ,\ttuutuu\tdotii\tdoz\tbil\tam\tfaasa
one-one\tdirt\tHAB\tbuild\tdam\ttwo-two\tdirt\tHAB\tbuild\tit\tfaster
A dam is built one bit of earth at a time, but two bits of earth at a time would build it faster.