dì zhī
the 12 earthly branches 子[zi3], 丑[chou3], 寅[yin2], 卯[mao3], 辰[chen2], 巳[si4], 午[wu3], 未[wei4], 申[shen1], 酉[you3], 戌[xu1], 亥[hai4], used cyclically in the calendar and as ordinal numbers I, II etc
shí èr dì zhī
the 12 earthly branches 子, 丑, 寅, 卯, 辰, 巳, 午, 未, 申, 酉, 戌, 亥 (used cyclically in the calendar and as ordinal numbers)