
1) After cinco 2) Before siete 3) Certain whales 4) Cinco follower 5) Doce halved 6) DOS + cuatro 7) Dos + dos + dos 8) Dos into doce 9) Dos three times 10) Dos times tres 11) Dos x tres 12) Dos y cuatro 13) Dos y quatro 14) Durango dinnertime 15) Fox six 16) Half of doce 17) Half-dozen tamales 18) Hidalgo half-dozen
Found on
https://www.crosswordclues.com/clue/seis

The seis is a type of Puerto Rican dance music, related to décima. It originated in the later half of the 17th century in the southern part of Spain. The word means six, which may have come from the custom of having six couples perform the dance, though many more couples eventually became quite common. Men and women form separate lines down the h...
Found on
http://en.wikipedia.org/wiki/Seis

Sociedad Española de Informática de la Salud
Found on
http://www.encyclo.co.uk/local/20895

Song and dance form popular amongst the jíbaros of Puerto Rico, performed in groups of six couples (hence the name). Contains much of the traditional influences of Spain during the colonial period.
Found on
http://www.salsa-merengue.co.uk/4bohemians/expanded_glossary.html
No exact match found.