to yawn
Regular verb: yawn - yawned- yawned

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I do not yawn
you do not yawn
she doesnot yawn
we do not yawn
you do not yawn
they do not yawn 	Iamnot yawning
youarenot yawning
sheisnot yawning
wearenot yawning
youarenot yawning
theyarenot yawning	I did not yawn
you did not yawn
she did not yawn
we did not yawn
you did not yawn
they did not yawn 	Iwasnot yawning
youwerenot yawning
shewasnot yawning
wewerenot yawning
youwerenot yawning
theywerenot yawning	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I have not yawned
you have not yawned
shehasnot yawned
we have not yawned
you have not yawned
they have not yawned	I have not  been yawning
you have not  been yawning
shehasnot  been yawning
we have not  been yawning
you have not  been yawning
they have not  been yawning	I had not yawned
you had not yawned
she had not yawned
we had not yawned
you had not yawned
they had not yawned	I had not been yawning
you had not been yawning
she had not been yawning
we had not been yawning
you had not been yawning
they had not been yawning	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I will not yawn
you will not yawn
she will not yawn
we will not yawn
you will not yawn
they will not yawn 	I will not be yawning
you will not be yawning
she will not be yawning
we will not be yawning
you will not be yawning
they will not be yawning	I will not have yawned
you will not have yawned
she will not have yawned
we will not have yawned
you will not have yawned
they will not have yawned	I will not have been yawning
you will not have been yawning
she will not have been yawning
we will not have been yawning
you will not have been yawning
they will not have been yawning	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I would not yawn
you would not yawn
she would not yawn
we would not yawn
you would not yawn
they would not yawn 	I would not be yawning
you would not be yawning
she would not be yawning
we would not be yawning
you would not be yawning
they would not be yawning	I would not have yawned
you would not have yawned
she would not have yawned
we would not have yawned
you would not have yawned
they would not have yawned	I would not have been yawning
you would not have been yawning
she would not have been yawning
we would not have been yawning
you would not have been yawning
they would not have been yawning	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to yawn 	 	do not yawn
Let's not yawn
do not yawn 	 	

Participle 	
Present 	Past 	 	 	
yawning	yawned