Pattern A (start at $2$; multiply by $2$, then subtract $1$):

• 1st term: $2$
• 2nd term: $2 \times 2 - 1 = 3$
• 3rd term: $3 \times 2 - 1 = 5$
• 4th term: $5 \times 2 - 1 = 9$

Pattern B (start at $2$; subtract $1$, then multiply by $2$):

• 1st term: $2$
• 2nd term: $(2 - 1) \times 2 = 2$
• 3rd term: $(2 - 1) \times 2 = 2$
• 4th term: $(2 - 1) \times 2 = 2$

Sum of the 4th terms:

$9 + 2 = 11$