hAre rAma hAre kRishna - ShodasaNama Mantra - How to contemplate?

Hare Rama Hare Rama Rama Rama Hare Hare

Hare Krishna Hare Krishna Krishna Krishna Hare Hare…

In the above Shodasa NaAma Mantra there are 16 Divine names of the Supreme God HARI (Hare) repeated 8 times; RAMA & KRISHNA 4 times each. How to contemplate them while chanting?

IMHO one must contemplate/remember the following Rupas of the Supreme God Vishnu while reciting HARI...

VISHNU - The Hari Sarvottama - Panchaniyamaka Bhagawadrupa - Aniruddha-Pradyumna-Sankarshana-Vasudeva-Narayana - the plenary expansions of Lord Vishnu;

NARAHARI - Lord NaraSimha (Hari means Lion)>Prahlada-Varada;

SRIHARI (LakshmiNarayana) - they always live together, they are inseparable. Where Lakshmi is not present Sri Hari will not be there and where Sri Hari is not there Lakshmi does not stay.

KARIRAJAVARADA (Gajendra Moksha) where Lord Sri Hari comes to the rescue of Gajendra;

HARE SREENIVAASA (Lord Venkateswara) who is saakshaatt - Lord Vishnu the Hari Sarvottama;

HAYAGREEVA - the Supreme God of Knowledge and destroyer of ignorance; Hari also means Horse - Lord Sri Hari the one who has taken incarnation as Hayagreeva;

SAVITHRU naAmaka SURYANARAYANA - Dhyeyassada Savithrumandala madhyavarthi...... Hari also means Sun who is also known as ARKA one of the Ashta Vasus whose Antaryaami is HARI;

KRISHNA - प्रथमं तु हरिं विंद्यात् - Sri Krishna Dwadasanama Stothram (Mahabharatha-Aranya Parva) - Sri Krishna UvaAcha...

One should also contemplate on NAHAM KARTA HARIH KARTA…

RAMA to be contemplated as...

MOOLA RAMA - DASARATHA RAMA - SEETA RAMA - BHARGAVA RAMA (ParashuRama);

KRISHNA to be contemplated as...

HARI KRISHNA - VASUDEVA KRISHNA - YASODA KRISHNA - VASISHTA KRISHNA (VEDAVYASA);

Some of the other terminologies associated with HARI are > 

HARI-DINA;

HARIVAASARA;

HARIVAMSA PURANA;

HARIKATHA;

HARIKATHAAMRUTASARA...

"Satyesam SatyaSankalpam Satyam SatyaVratam Harim....

"Harim Hamsam Krushnam NaraHariMaNantam Madhuripum...

HARI is Taapatraya NIvaraka (TapatrayaHaaraka) - the one who removes/eliminates the worry, anxiety, difficulty, trouble... of his devotees;

'HARI' refers to HARI SARVOTTAMA the ever green Supreme God SriManNarayana the MokshaKaraka; the one who destroys (Hari) the cycle of birth and death. Hari also means the one who steals and Lord Sri Hari is the one who steals (destroys) our ignorance;

Sri KrushnaArpanamasthu

'nAham kartA hariH kartA'