I)
CORDELIA
We are not the first
Who, with best meaning, have incurr'd the worst.
For thee, oppressed king, am I cast down;
KING LEAR
No, no, no, no! Come, let's away to prison:
We two alone will sing like birds i' the cage:
When thou dost ask me blessing, I'll kneel down,
And ask of thee forgiveness: 

II)
The battle lost and Cordelia and Lear
Taken prisoner by Edmund who fears
That they may down him in their honour and grace
So he plots their murder with inculpable face 

III)
REGAN: 
He led our powers;
Bore the commission of my place and person;
GONERIL:
In his own grace he doth exalt himself,
More than in your addition.
REGAN: 
In my rights,
By me invested, he compeers the best.
GONERIL:
That were the most, if he should husband you.
REGAN: 
Jesters do oft prove prophets.

IV)
Edmund philandered with both and hence hopes fly high
Hostility is nurtured between allies
Two serpents with their lust on fire
Would use all means just to still their desire

1)
Standing straight, the Duke of Albany
Through lies and lust he now can clearly see
Accuse his cheating wife, he holds the evidence her plans will fail
Goneril unmasked in the end the truth shall prevail.

Ref.:
Atrocity and schemes feeding bloodshed and anger
But over fraud oft the truth shall prevail
Lecherous prurience the loins rule the mindset
But in the end oft the truth shall prevail

2)
Edgar appears strikes Edmund down
The traitor beaten crouches on the ground
The sufferings of Gloucester all the lies and all the bale
Edmund unmasked in the end the truth shall prevail

Ref.:
Atrocity and schemes feeding bloodshed and anger
But over fraud oft the truth shall prevail
Lecherous prurience the loins rule the mindset
But in the end oft the truth shall prevail