In December , Hyeyeon featured on Quattro Code 's single `` Stick With You '' and Bestie released the digital single `` Zzang Christmas '' . In December , Hyeyeon released on Quattro Code Single `` Stick With You '' and Bestie published the digital single `` Zzang Christmas '' .
Pada Disember, Hyeyeon dipaparkan pada single Quattro Code 'Stick With You'' dan Bestie mengeluarkan single digital 'Zzang Christmas''. Pada Disember, Hyeyeon dikeluarkan pada Quattro Code Single "Stick With You" dan Bestie menerbitkan single digital "Zzang Christmas" '.