diff --git a/lab2CA.srcs/sources_1/new/BasicModules.v b/lab2CA.srcs/sources_1/new/BasicModules.v
index 04c2750..a8a98d4 100644
--- a/lab2CA.srcs/sources_1/new/BasicModules.v
+++ b/lab2CA.srcs/sources_1/new/BasicModules.v
@@ -177,7 +177,37 @@ module mux_4_1(input wire [1:0] switch,
             2'b00 : out = A;
             2'b01 : out = B;
             2'b10 : out = C;
-            default: out = D;
+            2'b11 : out = D;
+            default : out = 9'bxxxxxxxxx;
+        endcase
+    end
+
+endmodule
+
+module mux_16_1(
+    input wire [3:0] switch,
+    input wire [8:0] A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,
+    output reg [8:0] out);
+           
+    always @(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,switch) begin
+        case (switch)
+            4'b0000 : out = A;
+            4'b0001 : out = B;
+            4'b0010 : out = C;
+            4'b0011 : out = D;
+            4'b0100 : out = E;
+            4'b0101 : out = F;
+            4'b0110 : out = G;
+            4'b0111 : out = H;
+            4'b1000 : out = I;
+            4'b1001 : out = J;
+            4'b1010 : out = K;
+            4'b1011 : out = L;
+            4'b1100 : out = M;
+            4'b1101 : out = N;
+            4'b1110 : out = O;
+            4'b1111 : out = P;
+            default : out = 9'bxxxxxxxxx;
         endcase
     end