a. Strong: any card from	to
b. Weak: any card from	to
c. Deuce: any

In blackjack switch the 2s are separated from the Dealer’s weak cards because of the Blackjack Switch rule of a dealer total of 22 will push all other player hands, except blackjack.

Second phase is Player’s Hands estimation:
By assuming that the dealer has a Ten in the hole, and that any player hand that requires a hit will catch a Ten for a hit card, we would be able to estimate four different types of player hands as Winner, Loser, Push or Chance.   

Winner
Any player blackjack and any hard or soft total from 18 to 20 that beats the dealer’s total (assuming ten in the hole) is a Winner.

Any player total of 8 to 11 that beats the dealer card.

Examples:

Player cards are estimated as a Winner	Dealer
Player	Dealer
Player	Dealer