Add these X translations to .Xdefaults. (or actually it looks like only .Xdefaults-HOST is read)

*translations:  #override \
       Shift<Key>Home:         string(0x1b) string("[1$")\n \
       Shift<Key>Insert:       string(0x1b) string("[2$")\n \
       Shift<Key>Delete:       string(0x1b) string("[3$")\n \
       Shift<Key>End:        string(0x1b) string("[4$")\n \
       Shift<Key>Page_Up:      string(0x1b) string("[5$")\n \
       Shift<Key>Page_Down:    string(0x1b) string("[6$")\n\
       Shift<Key>Up:      string(0x1b) string("[a")\n\
       Shift<Key>Down:    string(0x1b) string("[b")\n\
       Shift<Key>Right:      string(0x1b) string("[c")\n\
       Shift<Key>Left:    string(0x1b) string("[d")