The sonnet is a poetic form of fourteen lines -- everything else about it has been experimented with.
1. Wilfred
Owen's Anthem for Doomed Youth:
What passing-bells for these who
die as cattle?
Only the monstrous anger of the guns.
Only the stuttering rifles' rapid rattle
Can patter out their hasty orisons.
No mockeries now for them; no prayers nor bells,
Nor any voice of mourning save the choirs,--
The shrill, demented choirs of wailing shells;
And bugles calling for them from
sad shires.
What candles
may be held to speed them all?
Not in the hands of boys, but in their eyes
Shall shine the holy glimmers of good-byes.
The pallor of
girls' brows shall be their pall;
Their flowers the tenderness of patient minds,
And each
slow dusk a drawing-down of blinds.
2. W. B. Yeats' Leda and the Swan:
A sudden blow: the great wings beating still
Above the staggering girl, her thighs caressed
By the dark webs, her nape caught in his
bill,
He holds her helpless breast upon his breast.
How can those terrified vague fingers push
The feathered glory from her loosening thighs?
And how can body, laid in that white rush,
But feel the strange
heart beating where it lies?
A shudder in the loins engenders there
The
broken wall, the burning roof and tower
And Agamemnon
dead.
Being so caught up,
So mastered by the brute blood of the
air,
Did she put on his knowledge with his power
Before the indifferent
beak could let her drop?