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ACROSS

 1 Hater, 19 (12)

 7 Trade hands after a turn (4)

11 Surrealist poet had ultimately made a choice (5)

12 19 heros beat surreptitious follower, switching places inside (11)

13 Construction work, for example, within opulent house: marble and gold counter (6,5)14 Couple of grizzlies devour 19 (5)

15 Y’s bad pun involving a missile home (7)

17 19 confused a China pro (9)

18 Republican expert’s cultural construct that is biologically groundless (4)

19 Alternately being like this puzzle, compared with most of ours (3)

20 Go slow, covering capital city (4)

26 Ono strums amateurishly for 19 (9)

28 Routine treatment before a child is born (2,5)

29 Competent, replacing good grade with number 19 (5)

30 Liberal came down with our governor (6,5)

33 I help neaten messy 19 (11)

34 Awards held in tandem, mysteriously (5)

35 Purpose of alcoholic drink (4)

36 While nitrogen enters broken-down motor, I nearly assuage 19 (12)

DOWN

 1 Monroe reformed this country’s 19 (8)

 2 Betray resistance much? (3,2)

 3 University license supports multifaceted evil operating with water (9)

 4 Scatter sunlight in a hurry (8)

 5 Skewered meat from Hollywood pig going up to $1,000 (5)

 6 In Iran, zero funding of a public official (8)

 8 Support for a long-shot candidate to interview lunatic (5-2,4)

 9 Engage in partisan activity, with American president constraining independent jerk (8)

10 Conundrum of an exploded silver mine? (6)

16 Pause in one’s studies to talk outside bedroom after call (6,5)

17 Front half of spuriously engineered car (5)

21 Shriek about our dairy product (4,5)

22 Those that revise and finish in the morning? (8)

23 Piles of glacial debris fall into Simpsons tavern (8)

24 19 characters from E.T. in Recycled (8)

25 Officer briefly pulling up rope for 19 (8)

27 Cut adopted by insanely hot rock band (3,3)

31 Around Rhode Island, the German gets less wet (5)

32 Stockholm economist hosts ancient Mexican (5)

SOLUTION TO PUZZLE NO. 3381

ACROSS 1 anag. 5 STO(PGA)P (pots rev.) 10 LANA + I 11 BELL(CUR + V)E 12 “grate planes” 13, 16D, 22 BUT + CHE + RED 14 OL(IG)ARCH (choral anag., GI rev.) 17 VAL(U)E 19 H(A)UNT 20 PEIGNO (anag.) + I + R 23 pun 26 anag. 27 A[ss] + LIVE (rev.) 28 anag. 29 ENERG (anag.) + Y

DOWN 2 MI(N)CE 3 S(KINT)IGHT (knit anag.) 4 DABB(L)ER 5 SEL[l] + FISH 6 OR(C)AS (soar anag.) 7 anag. 8 P(R)ET + TIER 9 rev. 15 LA(UNDER)ED (deal rev.) 17 VENTI LAT[t]E 18 anag. 20 P(REF)ACE 21 anag. 23 “floor a” 24 ICI + NG 25 SEE + K