// test_simulation_and_1_test.v
module f1_test(input [1:0] in, output out);
assign out = in[0] & in[1];
endmodule

// test_simulation_and_2_test.v
module f2_test(input [1:0] in, output out);
assign out = in[0] && in[1];
endmodule

// test_simulation_and_3_test.v
module f3_test(input [2:0] in, output out);
assign out = in[0] & in[1] & in[2];
endmodule

// test_simulation_and_4_test.v
module f4_test(input [2:0] in, output out);
assign out = in[0] && in[1] && in[2];
endmodule

// test_simulation_and_5_test.v
module f5_test(input [3:0] in, output out);
assign out = in[0] & in[1] & in[2] & in[3];
endmodule

// test_simulation_and_6_test.v
module f6_test(input [3:0] in, output out);
assign out = in[0] && in[1] && in[2] && in[3];
endmodule

// test_simulation_and_7_test.v
module f7_test(input [3:0] in, output out);
and myand(out, in[0], in[1], in[2], in[3]);
endmodule