A⊗B=
Out[]//MatrixForm=
a
11
b
11
a
11
b
12
a
12
b
11
a
12
b
12
a
11
b
21
a
11
b
22
a
12
b
21
a
12
b
22
a
21
b
11
a
21
b
12
a
22
b
11
a
22
b
12
a
21
b
21
a
21
b
22
a
22
b
21
a
22
b
22