利用者:Asinis632

https://www.tinkercad.com/things/2FKRJ6plxtE

[a:b] is domino [b:c] is another. [a:b][b:c] = [abc] or [word]=[wor][ord] = [wo][or][rd]=[w:o][o:r][r:d] [s][word]= [s:w][ord] [order]=[ord][der]=[ord][de][er]=[ord][d:e][e:r]=[o][r][d][e][r]