Step i)

Step ii)

$\int [(q_{1},q_{3}b)]=\int[(q_{1},b) U (q_{3} ,b)]$

= $\emptyset U \emptyset= \emptyset$

$\int[(q_{2}a)]=\int(q_{2},a)=\emptyset$

$\int[(q_{2}b)]=\int(q_{2},b)=q_{3}$

$\int[(q_{3}a)]=\int(q_{3},c)={q_{3} q_{4}}$

$\int[(q_{3}b)]=\int(q_{3},b)=\emptyset$

$\int[(q_{4}a)]=\int(q_{4},0)=\emptyset$

$\int[(q_{4}b)]=\int(q_{4},b)={q_{4},q_{1}}$