B uacute c u1eb7c nhi u1ec7t t igrave nh 1
B uacute c u1eb7c ngon l agrave nh 2
N u1eeda u0111 ecirc m b u1ed1 m ograve v agrave o ph ograve ng t ocirc i
Th u1ee5t c u1eb7c v ocirc mi u1ec7ng