I'll be trekking you'll be trekking he'll be trekking we'll be trekking you'll be trekking they'll be trekking
Perfect
I'll have trekked you'll have trekked he'll have trekked we'll have trekked you'll have trekked they'll have trekked
V-ing perfect
I'll have been trekking you'll have been trekking he'll have been trekking we'll have been trekking you'll have been trekking they'll have been trekking
Negation
Simple form
I shan't trek you shan't trek he shan't trek we shan't trek you shan't trek they shan't trek
V-ing form
I shan't be trekking you shan't be trekking he shan't be trekking we shan't be trekking you shan't be trekking they shan't be trekking
Perfect
I shan't have trekked you shan't have trekked he shan't have trekked we shan't have trekked you shan't have trekked they shan't have trekked
V-ing perfect
I shan't have been trekking you shan't have been trekking he shan't have been trekking we shan't have been trekking you shan't have been trekking they shan't have been trekking
Interrogative form
Simple form
shall I trek? shall you trek? shall he trek? shall we trek? shall you trek? shall they trek?
V-ing form
shall I be trekking? shall you be trekking? shall he be trekking? shall we be trekking? shall you be trekking? shall they be trekking?
Perfect
shall I have trekked? shall you have trekked? shall he have trekked? shall we have trekked? shall you have trekked? shall they have trekked?
V-ing perfect
shall I have been trekking? shall you have been trekking? shall he have been trekking? shall we have been trekking? shall you have been trekking? shall they have been trekking?
Interro-negative form
Simple form
shan't I trek? shan't you trek? shan't he trek? shan't we trek? shan't you trek? shan't they trek?
V-ing form
shan't I be trekking? shan't you be trekking? shan't he be trekking? shan't we be trekking? shan't you be trekking? shan't they be trekking?
Perfect
shan't I have trekked? shan't you have trekked? shan't he have trekked? shan't we have trekked? shan't you have trekked? shan't they have trekked?
V-ing perfect
shan't I have been trekking? shan't you have been trekking? shan't he have been trekking? shan't we have been trekking? shan't you have been trekking? shan't they have been trekking?