木+广 MOKU, BOKU, ki - tree / The "Madare" radical - slanting roof
山+⺓ SAN, yama - mountain / The "Itogashira" radical - young, slight
官+ケ KAN - government, authorities / Katakana "Ke"
米+日+一+土 BEI, MAI, kome - rice / NICHI, JITSU, hi, ka - sun, day / ICHI, ITSU, hito(tsu) - one / DO, tsuchi - earth, soil
土+田 DO, tsuchi - earth, soil / DEN, ta - paddy field
They all make another character if the same radical is used more than once.
麻 MA, asa - hemp, flax
幽 YUU - quiet, deep
管 KAN, kuda - pipe, control
糧 RYOU, ROU, kate - food, provisions
埋 MAI, u(maru), u(meru), u(moreru) - bury, be buried, filled up