试错

试错	shì cuò	trial and error (abbr. for 尝试错误法) / to experiment (to see what works and what doesn't)
试	shì	to test / to try / experiment / examination / test
错	Cuò	surname Cuo
错	cuò	mistake / wrong / bad / interlocking / complex / to grind / to polish / to alternate / to stagger / to miss / to let slip / to evade / to inlay with gold or silver