Answer:
⺓+八+一+心 The "Itogashira" radical - young, slight / HACHI, ya(ttsu), ya(tsu), ya, yo - eight / ICHI, ITSU, hito(tsu) - one / SHIN, kokoro - heart
广+木+石 The "Madare" radical - slanting roof / MOKU, BOKU, ki - tree / SEKI, SHAKU, ishi - stone
ケ+シ+専+、 Katakana "Ke" / Katakana "Shi" or The "Sanzui" radical - water / SEN, moppa(ra) - entirely, exclusively / Comma
口+八+、 KOU, kuchi - mouth / HACHI, ya(ttsu), ya(tsu), ya, yo - eight / Comma
宀+口+ノ The "Ukanmuri" radical - roof, house / KOU, kuchi - mouth / Katakana "No" or The "No" radical - diagonal sweeping stroke
They all make another character if the same radical is used more than once.
慈 JI, itsuku(shimu) - love, treat with affection
磨 MI, miga(ku) - polish, brush
簿 BO - record book, ledger, register
尽 JIN, tsu(kusu), tsu(kiru), tsu(kasu) - exhaust, use up, run out
宮 KYUU, GUU, KU, miya - shrine, palace, prince