$#Cam$
` -> ` : ( + ) : I + am
` -> ` : ( - ) : I + am not
` -> ` : ( + ) : He / she /it + is
` -> ` : ( - ) : He / she / it + isn't
` -> ` : ( ? ) : Ís + he / she /it + ... ?
` -> ` : ( + ) : You / we / they + are
` -> ` : ( - ) : You / we / they + aren't 
` -> ` : ( ? ) : Are + you / we / they + ... ?
` 1 ` : isn't
` 2 ` : aren't
` 3 ` : am