ᗘඡ RO Ӡ ᗘ RR Ӡ Rඡ O ᗘ ᗘඡ RO Ӡ ᗘ RR Ӡ Rඡ O ᗘ

Câu 13. ᗘඡ Ro ӡ ᗘ RR ӡ Rඡ o ᗘඡ ᗘඡ R R Rඡ Rᗘඡ ӡඡo R Rඡ ᗘඡ ඡ ӡ 〘ඡ RR ӡ RඡR ӡ 〘ඡ ඡ R Rඡ ӡ R〘ඡ R Rᗘඡ R Rඡ ӡ Rඡ ӡ R〘ඡ R R