42
     : nat
0
     : nat
0
     : nat
427
     : nat
427
     : nat
427
     : nat
427
     : nat
427
     : nat
The command has indeed failed with message:
Cannot interpret this number as a value of type nat
The command has indeed failed with message:
Cannot interpret this number as a value of type nat
0
     : nat
0
     : nat
The command has indeed failed with message:
The reference xg was not found in the current environment.
The command has indeed failed with message:
The reference xG was not found in the current environment.
The command has indeed failed with message:
The reference x1 was not found in the current environment.
The command has indeed failed with message:
The reference x was not found in the current environment.
0x2a
     : nat