rch19b sch1 tch19 uch19b vch1
g3h1 h3h19 i3h19b j3h1 k3h19
5ti19 6ti19b 7ti1 8ti19 9ti19b
ukj19b vkj1 wkj19 xkj19b ykj1
jbk1 kbk19 lbk19b mbk1 nbk19