6 letter words:
reiver9,
riever9,
verier9,
5 letter words:
reive8,
river8,
crier7,
ricer7,
4 letter words:
vice9,
ever7,
rive7,
veer7,
vier7,
cere6,
cire6,
rice6,
3 letter words:
zee12,
eve6,
rev6,
vee6,
vie6,
cee5,
ice5,
rec5,
ere3,
err3,
ire3,
ree3,
rei3,
2 letter words:
er2,
re2,