I sustain you sustain he sustains we sustain you sustain they sustain
Present continuous
I am sustaining you are sustaining he is sustaining we are sustaining you are sustaining they are sustaining
Preterite
I sustained you sustained he sustained we sustained you sustained they sustained
Preterite continuous
I was sustaining you were sustaining he was sustaining we were sustaining you were sustaining they were sustaining
Present perfect
I have sustained you have sustained he has sustained we have sustained you have sustained they have sustained
Present perfect continuous
I have been sustaining you have been sustaining he has been sustaining we have been sustaining you have been sustaining they have been sustaining
Pluperfect
I had sustained you had sustained he had sustained we had sustained you had sustained they had sustained
Pluperfect continuous
I had been sustaining you had been sustaining he had been sustaining we had been sustaining you had been sustaining they had been sustaining
Future
I will sustain you will sustain he will sustain we will sustain you will sustain they will sustain
Future continuous
I will be sustaining you will be sustaining he will be sustaining we will be sustaining you will be sustaining they will be sustaining
Future perfect
I will have sustained you will have sustained he will have sustained we will have sustained you will have sustained they will have sustained
Future perfect continuous
I will have been sustaining you will have been sustaining he will have been sustaining we will have been sustaining you will have been sustaining they will have been sustaining
Conditional
Present
I would sustain you would sustain he would sustain we would sustain you would sustain they would sustain
Present continuous
I would be sustaining you would be sustaining he would be sustaining we would be sustaining you would be sustaining they would be sustaining
Past
I would have sustained you would have sustained he would have sustained we would have sustained you would have sustained they would have sustained
Past continuous
I would have been sustaining you would have been sustaining he would have been sustaining we would have been sustaining you would have been sustaining they would have been sustaining