In the Bujinkan Dōjō Ten Chi Jin Ryaku no Maki we have nine basic kamae listed. Those Kamae should help you understand the right body positioning, gain more felixbility and stability. Training the kamae is a good way of conditioning your koshi (lower back, hips or lumber region) and legs. It also helps you cultivate your mind and will.
Kyū Kamae 九構
The 9 essential kamae, we perform during the Bujinkan Training.
Fudōza
不動坐 immovable seat
Shizen no Kamae
自然の構 natural posture
Hira Ichimonji no Kamae
平一文字の構 flat straight line posture
Ichimonji no Kamae
一文字の構 straight line posture
Doko no Kamae
怒虎の構 angry tiger posture
Hichō no Kamae
飛鳥の構 flying bird posture
Hōko no Kamae
encircling posture
Kōsei no Kamae
攻勢の構 aggressive posture
Jūmonji no Kamae
十文字の構 cross form posture