Okay, in the left side will be the country and in the right side the capital. 
Argentina - Buenos Aires
Bolivia - Sucre
Brasil - Brasilia
Chile - Santiago
Colombia - Bogotá
Ecuador - Quito
Perú - Lima
Guyana - Georgetown 
Paraguay - Asunsión
Surinam - Paramaribo
Uruguay - Montevideo
Venezuela - Caracas

Some names have accent, that is the proper way to write them. But, if you are going to write them in English is ineed.