TETRACTYS a complete thought

The challenges of the late  Ray Stebbing's TETRACTYS form are worth re-stating:

A.each line of 5 is required 'to stand on its own '

B.the poem to express a complete thought,

C.within the narrow compass of 20 syllables.

D. line i 1

line ii. (1+1)

2 line iii (2+1)

3 line iv (3+1).

4 line v (1+2+3+4). 10

total.20