Defensive and disturbed bidding

Defense against weak/strong 1C

After (1C) - ?

Pass    = Weak, or 16hcp+.
Doubl   = (11)12-15hcp, normal take-out.
1D      = 6-11hcp, both majors. At least 4-4.
1H/S    = 8-15hcp, 5+.
1NT     = 6-11hcp, both minors. At least 5-4.
2C      = 11-15hcp, 5+.
2D+     = Preemptive style.

After (1C) - 1D/H/S - (P/1X), partner bids naturally or 2C as a 'good raise' with 
invitational values or a game hand. New suit after 2C from partner is forcing.
Raise to 2H/S is natural with some values, and a jump to 3H/S is preemptive.

After the take-out double, partner may pass or double the opponents further bids 
if he is looking for penalties. A direct 2C instead asks for more information from 
the doubler and he bid 2H/S/NT with minimum (11-13hcp) and 3H/S/NT with 14-15hcp. 

After 1NT partner bid naturally except 2NT which shows at least invitational values.
2H/S is natural and constructive, but non forcing. Jump support is preemptive.

(1C) - 1NT - (P) - 2NT:
(P) - ?

3C      = minimum, 6-9hcp.
3D      = minimum, x-x-6(7)-4 distr.
3H/S    = singleton/void with 10-11hcp.
3NT     = 5-4-2-2 and 10-11hcp.



After (1C) - P - (1D) - ?

Pass    = Weak, or 12hcp+ (12-15 take-out, or 16hcp+)
Doubl.  = 6-11hcp, both majors. At least 4-4.
1H/S    = 8-15hcp, 5+.
1NT     = 6-11hcp, both minors. At least 5-4.
2C      = 11-15hcp, 5+.
2D+     = Preemptive style.