ル+九 Katakana "Ru" or The "Hitoashi" radical - human legs / KYUU, KU, kokono(tsu) - nine
番 BAN - number, watch, order
心+四+丁 SHIN, kokoro - heart / SHI, yo(tsu), yo(ttsu), yo, yon - four / CHOU, TEI - counter, block
ル+至 Katakana "Ru" or The "Hitoashi" radical - human legs / SHI, ita(ru) - utmost, arrive, lead to
ル+切 Katakana "Ru" or The "Hitoashi" radical - human legs / SETSU, ki(ru), ki(reru) - cut
The saying goes "If something smells, put a lid on it." Adding a lid (⼧ The "Ukanmuri" radical - lid, top) to these characters gives us a few new ones.
究 KYUU, kiwa(meru) - investigate thoroughly
審 SHIN - hearing, investigation, trial
寧 NEI - peaceful, quiet, rather, preferably
窒 CHITSU - plug up, obstruct
窃 SETSU - steal