1.} Katin kwali ya ƙunshi Layer of Core takarda da katin saniya ana kiranta "Carded Cardboard" {{1}
Kwatanni na gargajiya, gaba daya ake amfani da shi don kwanciya, ragewa da rufe abubuwa marasa daidaituwa {{0} {0}
2.} Katin kwali ya ƙunshi takarda ɗaya na takarda mai kyau da ƙananan yadudduka biyu na katin saniya ana kiranta "ramin ramin" {{{1}
3.} on takarda mai-Layer-Layer-Layer-Layer ya kasu kashi uku na katin sanyaya, wanda ake kira "Double Bridd" {{2}
Za'a iya haɗa kwamitin biyu na rami daban da takarda daban, kamar "B" takarda mai hoto tare da "C" takarda {0 {0}
4.}} onangarfin takarda mai-uku-Layer-ukun da aka raba zuwa yadudduka huɗu na katin saniya, wanda ake kira "kwali na uku" .
5.} ulcia mai ƙarfi na ƙwaƙwalwa mai ƙarfi daga allon rami, da takarda mai kyau a tsakiyar takarda ana yin takarda biyu na lokacin farin ciki {2}