Here a list of swaps, still missing loads, preferably you'd find 10+

Swaps

Fwc 1

Mex 2, 3, 9, 12x2, 15, 17, 18, 19

Rsa 1, 5, 8x2

Kor 19x2

Cze 16

Can 6, 14, 18, 20

Bih 7,

Qat  6, 14, 16

Sui 3, 5x2, 10, 11, 15x2, 18

Bra 2,4, 5, 6 , 15

Mor  9, 11,

Hai 1, 8, 11, 17,

Sco 1x2, 3, 7,

Usa 4x2,  7, 15, 20

Par

Aus 10, 17, 18

Tur 1, 5, 7

Ger 2, 14,

Cuw 8x2,  15

Civ 5, 16

Ecu 6, 9x2

Ned

Jpn 10, 13

Swe

Tun , 5, 6, 8, 10, 15, 18, 20

Bel 1,  16

Egy 9,  19

Irn 2,  15

Nzl 3, 6, 13

Esp 6

Cpv 4,  17x2

Ksa  , 9, 14

Uru 1, 12, 18

Fra 11, 17

Sen , 14x2, 19

Irq 9, 15

Nor 10, 12, 17

Arg

Alg 1, 13, 14

Aut 11, 16

Jor  18

Por 9, 16, 17

Cod 11, 13, 16

Uzb 7

Col, 4, 10, 15

Eng 4, 10,11, 14, 15x2, 16

Cro  2,12, 18

Gha 8, 20x2

Pan 3, 9 ,  15,  18x2

Fwc 10, 14, 17