良 RYOU, yo(i) - good
利 RI, ki(ku) - interest, take effect
流 RYUU, naga(reru), naga(u) - current, flow, style, pour
礼 REI, RAI - courtesy, salutation, gratitude
呂 RO, RYO, sebone - spine
They are the kanji on which the following katakana are based.
ラ Katakana "Ra"
リ Katakana "Ri" or The "Rittou" radical - knife, sword
ル Katakana "Ru" or The "Hitoashi" radical - human legs
レ Katakana "Re"
ロ Katakana "Ro" or KOU, kuchi - mouth