A man and his daughter manufacture unfinished tables and chairs. Each table requires $1$ h of sawing and $3$ h of assembly. Each chair requires $2$ h of sawing and $2$ h of assembly. Between the two of them, they can put in up to $8$ h of sawing and $12$ h of assembly work each day. Find a system of inequalities that describes all possible combinations of tables and chairs that they can make daily.