Tin h u1ecdc tr ograve m u1ea5t v u1ee3 1
M igrave nh l agrave m v u1eady c oacute qu aacute u0111 aacute ng vs c aacute c c ocirc g aacute i k
Cho nh acirc n vi ecirc n c u1ea5p d u01b0 u1edbi quan h u1ec7 v u1edbi v u1ee3 2
Sinh vi ecirc n u0111 u1ea1i h u1ecdc S agrave i g ograve n thi u1ebfu n u1ee3 cho ch u1ee7 n u1ee3 ch u1ecbch u0111 u1ec3 tr u1ea3 n u1ee3