19.
Apply two valley-folds according to the step #18.
Prepare for one valley-fold marked as (1).
We will not apply the valley-fold marked as (2). We will save it for the step #25.
20.
Apply the valley-fold of the step #19-(1).
Prepare for another valley-fold.
A FAIR bell-flower Sprang tip from the ground; And early its fragrance It shed all around; A bee came thither And sipp'd from its bell; That they for each other Were made, we see well. 1814.